Cited by 231Pituitary Gland Disorders and TreatmentsAdrenal Hormones and DisordersAdrenal and Paraganglionic Tumors

Effectiveness of metyrapone in treating Cushing's syndrome: a retrospective multicenter study in 195 patients

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Daniel, Eleni, Aylwin, Simon, Mustafa, Omar, Ball, Steve, Munir, Atif, Boelaert, Kristien, Chortis, Vasileios, Cuthbertson, Daniel J. +20 more·2015·The Journal of Clinical Endocrinology & Metabolism

Abstract

BACKGROUND: Cushing's syndrome (CS) is a severe condition with excess mortality and significant morbidity necessitating control of hypercortisolemia. There are few data documenting use of the steroidogenesis inhibitor metyrapone for this purpose. OBJECTIVE: The objective was to assess the effectiveness of metyrapone in controlling cortisol excess in a contemporary series of patients with CS. DESIGN: This was designed as a retrospective, multicenter study. SETTING: Thirteen University hospitals were studied. PATIENTS: We studied a total of 195 patients with proven CS: 115 Cushing's disease, 37 ectopic ACTH syndrome, 43 ACTH-independent disease (adrenocortical carcinoma 10, adrenal adenoma 30, and ACTH-independent adrenal hyperplasia 3). MEASUREMENTS: Measurements included biochemical parameters of activity of CS: mean serum cortisol "day-curve" (CDC) (target 150-300 nmol/L); 9 am serum cortisol; 24-hour urinary free cortisol (UFC). RESULTS: A total of 164/195 received metyrapone monotherapy. Mean age was 49.6 ± 15.7 years; mean duration of therapy 8 months (median 3 mo, range 3 d to 11.6 y). There were significant improvements on metyrapone, first evaluation to last review: CDC (91 patients, 722.9 nmol/L [26.2 μg/dL] vs 348.6 nmol/L [12.6 μg/dL]; P < .0001); 9 am cortisol (123 patients, 882.9 nmol/L [32.0 μg/dL] vs 491.1 nmol/L [17.8 μg/dL]; P < .0001); and UFC (37 patients, 1483 nmol/24 h [537 μg/24 h] vs 452.6 nmol/24 h [164 μg/24 h]; P = .003). Overall, control at last review: 55%, 43%, 46%, and 76% of patients who had CDCs, UFCs, 9 am cortisol less than 331 nmol/L (12.0 μg/dL), and 9 am cortisol less than upper limit of normal/600 nmol/L (21.7 μg/dL). Median final dose: Cushing's disease 1375 mg; ectopic ACTH syndrome 1500 mg; benign adrenal disease 750 mg; and adrenocortical carcinoma 1250 mg. Adverse events occurred in 25% of patients, mostly mild gastrointestinal upset and dizziness, usually within 2 weeks of initiation or dose increase, all reversible. CONCLUSIONS: Metyrapone is effective therapy for short- and long-term control of hypercortisolemia in CS.

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Crossref · 10.1210/jc.2015-2616

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  • Mean UFC is routinely used in clinical practice and research to monitor disease control and treatment response in patients with CS treated with medical therapy.

    “Mean UFC is routinely used in clinical practice and research to monitor disease control and treatment response in patients with CS treated with medical therapy (129-137).”

    From Measuring cortisol in Cushing syndrome: diagnosis, monitoring, and cortisol circadian rhythm improvement. (2026) · cites this paper as [131]

    The Materials and Methods (page unavailable) identify UFC as a monitoring test and say mean UFC values were compared before and during metyrapone treatment. This supports its use to assess treatment response in the study, but the Discussion says monitoring tests and their frequency varied; it does not establish that mean UFC is routinely used across clinical practice and research for all medical therapies for Cushing’s syndrome. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • In clinical trials, the efficacy of steroidogenesis inhibitors and pituitary-directed therapies in patients with CS was primarily evaluated by normalization of cortisol secretion per UFC.

    “In clinical trials, the efficacy of steroidogenesis inhibitors and pituitary-directed therapies in patients with CS was primarily evaluated by the normalization of cortisol secretion per UFC (129-137).”

    From Measuring cortisol in Cushing syndrome: diagnosis, monitoring, and cortisol circadian rhythm improvement. (2026) · cites this paper as [131]

    The Materials and Methods (page unavailable) define UFC below the assay’s upper limit of normal as one measure of biochemical control. But this was a retrospective metyrapone study, not a clinical trial; it also assessed serum cortisol day-curves and 9 am serum cortisol. It does not establish that trials of steroidogenesis inhibitors and pituitary-directed therapies primarily used UFC normalization. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • The restoration of cortisol circadian rhythm following medical therapy has not been investigated or established for most medications used to treat CS, and it is not routinely measured to determine treatment response.

    “The restoration of cortisol circadian rhythm following medical therapy has not been investigated or established for most medications used to treat CS, and it is not routinely measured to determine treatment response (129-137).”

    From Measuring cortisol in Cushing syndrome: diagnosis, monitoring, and cortisol circadian rhythm improvement. (2026) · cites this paper as [131]

    The Materials and Methods (page unavailable) say cortisol day-curves were not routinely performed before treatment and that treatment response was assessed using mean cortisol values, rather than restoration of a circadian rhythm. This supports the point about limited rhythm monitoring in this metyrapone study, but the paper does not establish whether rhythm restoration has been investigated for most medications used to treat Cushing’s syndrome or whether rhythm is routinely measured across those treatments. (LLM, conf=0.78)

    Experimental — accuracy not yet measured

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Authors
Daniel, E., Aylwin, S., Mustafa, O., Ball, S., Munir, A., Boelaert, K., Chortis, V., Cuthbertson, D. J., Daousi, C., Rajeev, S. P., Davis, J., Cheer, K., Drake, W., Gunganah, K., Grossman, A., Gurnell, M., Powlson, A. S., Karavitaki, N., Huguet, I., Kearney, T., Mohit, K., Meeran, K., Hill, N., Rees, A., Lansdown, A. J., Trainer, P. J., Minder, A.-E. H., & Newell-Price, J.
Affiliations
  • University of Liverpool (GB)
  • St Bartholomew's Hospital (GB)
Corresponding author
Newell-Price, John
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2015-11
Volume
100
Issue
11
Pages
4146-4154
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2145652401
Cited by
231
References
31
Citations by year
2026: 14 · 2025: 22 · 2024: 19 · 2023: 17 · 2022: 36 · 2021: 24 · 2020: 14 · 2019: 24 · 2018: 21 · 2017: 19 · 2016: 18 · 2015: 2
FWCI
17.30
Type
journal article
Language
en
Open access
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Research Explorer (The University of Manchester) (publishedVersion)
  • White Rose Research Online (University of Leeds, The University of Sheffield, University of York) (acceptedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • ORCA Online Research @Cardiff (Cardiff University) (submittedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion, other-oa)
  • Newcastle University ePrints (Newcastle Univesity)
Funders
  • National Institute for Health and Care Research (ACF-2011-04-005)
  • Society for Endocrinology
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Pituitary Gland Disorders and Treatments
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Health Sciences › Medicine › Surgery › Adrenal and Paraganglionic Tumors
Keywords
metyrapone, Cushing's syndrome, hypercortisolism, Cushing's disease, ectopic ACTH syndrome, adrenocortical carcinoma, steroidogenesis inhibition, urinary free cortisol, treatment effectiveness, adverse effects, drug discontinuation, adrenal insufficiency
MeSH terms
Adolescent, Adult, Aged, Aged, 80 and over, Child, Child, Preschool, Cushing Syndrome, Dose-Response Relationship, Drug, Drug Therapy, Combination, Enzyme Inhibitors, Humans, Hydrocortisone, Infant, Male, Metyrapone, Middle Aged, Pituitary Neoplasms, Retrospective Studies, Treatment Outcome, ACTH-Secreting Pituitary Adenoma, Young Adult

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